Php正则表达与Strtolower帮助需要 [英] Php Regex With Strtolower help Need

问题描述

 $ text ='嗨#How are you'; 
 
我需要
 $输出=你好<   a  < span class =code-attribute>   href   =  / how >  #How <   / a  >  
 
我需要从$ text中提取Hashtag，然后将其替换为链接标签部分转换为小写并保留主题标签，因为它是

解决方案

text ='嗨#How are you';

我需要

输出=你好< a href = / how > #How < / a >

我需要从

文本然后将其替换为带有标签部分转换为小写的链接并保留主题标签

$text = 'Hi #How are you';

I need 
$Output = Hi <a href="/how">#How</a>

I need to extract Hashtag from the $text and then replace it with a link with hashtag part converted to lowercase and leave hashtag as it is

解决方案

text = 'Hi #How are you'; I need

Output = Hi <a href="/how">#How</a> I need to extract Hashtag from the

text and then replace it with a link with hashtag part converted to lowercase and leave hashtag as it is

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